On the third night of their The Late Show With David Letterman residency, the Foo Fighters joined Tony Joe White for a bluesy version of “Polk Salad Annie.”

Foo’s also performed one of their own songs for a special web exclusive video. Letterman introduced, “These gentlemen, we’ve known each other for a long long time now. They have crossed my path in ways unexpected and expected. And, as a result, each and every year they grow to mean more to me as human beings and talents musical artists… It’s the second song of theirs that will always have great great meaning to me for the rest of my life,” he explained. Following the performance, a teary eyed Letterman proclaimed, “You see what I mean? That’s pretty good!”